indexing

问题 I've a large set of text documents which I will index with Solr, in a format where each line of text has associated metadata. For example: #metadata1 A line of text. #metadata2 Another long, broken line of #metadata3 text that should be searchable. I'd like to index this such that the content is searchable, including phrase matches spanning multiple lines, but not the metadata. However, I can't discard the metadata: I would like to have any matches still have the associated metadata. E.g. A

问题 Hi I am developing a search function for an web application with Lucene.Net and NHibernate.Search. The application is used by a lots of companies but is runned as a single service, using different databases for different companies. Therefore I would need an index directory for each database rather than one directory for the entire application. Is there a way of achieve this in Lucene.Net? I have also considering storing the indexes for each company in there respecitive database but havent

问题 I am wondering why indexing Julia's DataArrays with NA values is not possible. Excuting the snipped below results in an error(NAException("cannot index an array with a DataArray containing NA values")): dm = data([1 4 7; 2 5 8; 3 1 9]) dm[dm .== 5] = NA dm[dm .< 3] = 1 #Error dm[(!isna(dm)) & (dm .< 3)] = 1 #Working There is a solutions to ignore NA's in a DataFrame with isna() , like answered here. At a first glance it works like it should and ignoring NA's in DataFrames is the same approach

问题 I'm trying to figure out why my Ruby decryption method seems to break only for certain letters of the alphabet. The goal of the method is to take an input string ("new_str") and decrypts it by rewriting EACH letter in the string with its predecessor in the alphabet. i.e. "bcd" should return "abc" ... I could be wrong but it seems to work for the letters a-j, but then breaks for the letters k-z... for that last set it seems to return either an "a" "b" or "z" no matter the letter: e.g. decrypt(

问题 If i have two arrays & i want to compare their indexes, for ex: let var a1 = ["1", "2", "3"] let var a2 = ["3", "2", "3"] And i wanted to print something to say which index wasn't the same, such as: if a1[0] != a2[0] && a1[1] == a2[1] && a1[2] == a2[2]{ print("Index 0 is not the same.") Would i have to write 7 more of those statements to show all 8 possibilities of all correct/all wrong/index 1&1 wrong, etc? Thank you! 回答1: You can get all indexes like this: let diffIndex = zip(a1, a2)

问题 I am trying to use the indexx() algorithm from Numerical Recipes (NR) in C and have found a very strange bug. (NR is publicly available here: http://www2.units.it/ipl/students_area/imm2/files/Numerical_Recipes.pdf page 338, section 8.4) The function should output an array of indices that correspond to elements of the input array of floats, sorted from low to high. Below is a minimal working example, showing that the algorithm appears to ignore the first two elements. The output array first

问题 There are lots of questions on this topic, but all of them seem to be more complex cases than what I'm looking at at the moment and the answers don't seem applicable. OHDSI=> \d record_counts Table "results2.record_counts" Column | Type | Modifiers ------------------------+-----------------------+----------- concept_id | integer | schema | text | table_name | text | column_name | text | column_type | text | descendant_concept_ids | bigint | rc | numeric | drc | numeric | domain_id | character

问题 Let's say we have the following sparse matrix defined by this 3 vectors: [lines, columns, values] = find(A) lines = 1 2 3 5 1 3 3 5 4 5 columns = 1 2 2 2 3 3 4 4 5 5 values = 3 4 7 3 1 5 9 6 2 5 What I am trying to achieve is to access the element at the position (2, 2) I know you can do values(lines == 2) ( values(columns == 2) ) which will return all the values from second row (column). My question is how can you do something like values(lines == 2 && columns == 2) to get the value at A(2,2

问题 I have a docuemnt like this: public class Order { public string ClientName { get; set; } public List<OrderItem> Items { get; set; } } public class OrderItem { public string ProductCode { get; set; } public int Quantity { get; set; } } And I need to query collection of theese documents like this: var q = session.Query<Order_Index.Result, Order_Index>() .Where(o => o.ClientName.StartsWith("Jho") && o.Items.Any(i => i.ProductCode == "Book" && i.Quantity >= 10)) .OfType<Order>(); Every example of

问题 I don't know what is going wrong. http://IP_ADDRESS/solr/CORE_NAME/select?indent=on&q=Bangalore&wt=json There are more than 100 records which contains the word Bangalore in my database. However the the results contain just 2 records. However, The below Query below for works perfectly. http://IP_ADDRESS/solr/CORE_NAME/select?indent=on&q=Bangalor&wt=json Just removing the letter e from Bangalore , i get much more results containing the word "Bangalore". I think the word "Bangalore" is not